Spotting board construction



July 8, 1952 G. c. s|-|oo-P ETAL SPOTTING BOARD CNSTRUCTION Filed Dec. 28, 1946 INVENTORS GLEN 6. SHOOP 8 FRANK 6. HOOVER BY ATTORNEY Patented July 8, 1952 snofrrmo'nosnn oousrnoorlon Glencushoop and Frank G; Hoover,

. Escondido,-Calif.

Originalapplication.DecenihenZB; 19.4.6,- Serial No. j

719,006. Divided and this 8, 1948, Serial No. 1,084

4Claims. (organ- 2:40);-

. 1L Our invention relates to a spotting board of the type disclosed in application Serial No. 719,006, filed December 28, 19516, of which this application is a division, and the objects of our invention are:

-First, to provide a-spotting board of this" class mwhichthe vacuum conductor therein is constructed-of sheet metal and forms part ofthe spo'tting "board structure:

Second, toprov-ideaspotting board OfthlS' class which is very simple and economical iii-construc- -t1on, efficient in operation and which will not readily deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, our invention consists of certain novel features of construction, combination and arrangement of parts and portions as will hereinafter be described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon forming a part of this application in which:

Fig. 1 is a fragmentary side elevational view of our spotting board;

Fig. 2 is a plan view thereof showing portions broken away and in section to amplify the illustration; and

Fig. 3 is a sectional view taken from the line 3-3 of Fig. 2.

Similar characters of reference refer to similar parts and portions throughout the several views of the drawings.

The spotting board I, vacuum channel 2, and the suction leg 3 constitute the principal parts and portions of our spotting board.

The spotting board l or trough is divided by partition 4 into a large compartment 5 and the small one 6, and is provided with a glass top In over the larger compartment and a screen lb over the other compartment adjacent the glass top la outlined by frame lc beneath which the open end of the vacuum channel 2 is positioned as shown in Figs. 1 and 2 of the drawings, the open end 20. sometimes hereinafter referred to as suction nozzle or inlet of this vacuum channel 2 is defined by a substantially cylindrical portion 2b extending into close proximity to the screen lb concentrating the vacuum drawn upon a limited portion of the screen lb.

As shown in cross section in Fig. 3, the spotting board or trough is composed of two casings Id and la. The lower casing Id is a pan-like body that provides the bottom of the spotting board and extends upwardly at the sides thereof in the form of a wall-like rim retaining opposite edge portions application January of -the-'-glass top la: The upper casingamembervle fits-inside thelower-casing Id and the uppermost portion lg-of the casing le-isvbelowth'euppermost-portions o'fthe casing ld at opposite .edges If of theglass top member la, thus the glass top member la. 'i's completely supported intermediateopposite'legs or walls of the casing l d which retains ithe same in position. By reason of this construction the inverted'b'ottom of pan-like casingle prov ides an excellent support for the glass 'topwhile the rim'ofcasing ldretains it inisafety.

It will be here noted that the vacuum-channeltl is an inverted channel and that the lower side or floor lb of the casing ld also provides the lower side of the vacuum channel 2 as shown best in Fig. 3 of the drawings.

The upper end of the suction leg 3 is provided with a flange 3a. which is secured to the lower side In of the casing ld. around the opening la in said lower side in of said casing Id. This suction leg is a hollow cylindrical member and communicates with the interior of the vacuum :hannel 2 and also supports the spotting board l all as shown best in Figs. 1 and 3 of the drawings.

Though We have shown and described a particular construction, combination and arrangement of parts and portions, we do not wish to be limited to this particular construction but desire to include in the scope of our invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described our invention what we claim as new and desire to secure by Letters Patent is:

1. A trough construction for a spotting board comprising: a first pan-like body having a walllike rim projecting upwardly; a second pan-like body having a wall-like rim projecting downwardly and nested within the first said wall-like rim so that the inverted bottom of the second pan-like body will be below a plane tangent to the edges of the rim of the first pan-like body, a glass top disposed on the inverted bottom with the edges of said glass top engaged by the walllike rim of the first pan-like body.

2. A trough construction for a spotting board comprising: a first pan-like body having a walllike rim projecting upwardly; a second pan-like body having a wall-like rim projecting downwardly and'nested within the first said wall-like rim so that the inverted bottom of the second pan-like body will be below a plane tangent to the edges of the rim of the first pan-like body,

l f a glass top disposed on the inverted bottom with the edges of said glass top engaged by the walllike rim of the first pan-like body; a partition dividing said first body into separate compartments and an inverted U-shaped suction channel having the open side disposed on the floor of both compartments to close said open side and to provide a suction channel extending through said partition and communicating with an inlet in one compartment and an outlet in the other compartment.

3. A trough construction for a spotting .board comprising: a first pan-like body having a walllike rim projecting upwardly; a second pan-like body having a wall-like rim projecting downwardly and nested within the first said Wall-like rim so that the inverted bottom of the second pan-like body will be below a plane tangent to the edges of the rim of the first pan-like body, a glass top disposed on the inverted bottom with the edges of said glass top engaged by the walllike rim of the first pan-like body; a partition dividing saidfirst body'into separate compartments, a cover of imperforate material abutting the top edge of said rim of one compartment, said partition having an opening therein for a suction channel, a suction inlet located in said othercomp'artment and an inverted U-shaped suction channel having the open side disposed on the floor of both compartments to close said open side and to provide a suction channel extending through said partition and communicating with said inlet.

4. A trough construction for a spotting board comprising: a pan-like body having a wall-like rim projecting upwardly; a partition dividing said pan-like body into two separate compartments. a cover of imperforate material abutting the top edge of said rim to close one compartment. a cover of screen material also abutting another portion of said rim to cover the other compartment, said partition having an opening therein for a suction channel, a suction inlet located in said other compartment and an inverted U-shaped suction channel having the open side disposed on the floor of both compartments to close said open side and to provide a suction channel extending through said partition and communicating with said inlet.

' GLEN C. SHOOP.

FRANK G. HOOVER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS,

Number Name Date 1,984,267 Holder Dec. 11, 1934 2,174,387 Morken Sept. 26, 1939 2,279,984 Goodwin Apr. '14, 1942 2,284,572 Holder May 26, 1942 2,363,956 Glover Nov. 28, 1944 2,399,576 Shoop Apr. 30, 1946 2,434,404 Goodwin Jan. 13, 1948 

